Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment

doi:10.1002/adem.202001526

CORC > 金属研究所 > 中国科学院金属研究所

	Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment
	Hao, Jianfei 1; Yu, Baoyi 1; Bian, Jiancong 1; Liu, Jinmin 3; Sun, Wanting 2; Shi, Yuanji 1; Li, Runxia 2
刊名	ADVANCED ENGINEERING MATERIALS
	2021-02-08
页码	8
关键词	Al– Si– Cu– Mg alloy heat treatment mechanical properties microstructure evolution semisolid squeeze casting process
ISSN号	1438-1656
DOI	10.1002/adem.202001526
通讯作者	Li, Runxia(runxiali@163.com)
英文摘要	To adjust the morphology of the Si phase and improve the mechanical properties of Al-Si-Cu-Mg alloy formed by semisolid squeeze casting, the effects of solution time on microstructure evolution and mechanical properties are systematically studied. Results show that spheroidization occurs in the Si phase, and the content of Cu in the matrix increases simultaneously after solution treatment at 525 degrees C for 1 h. As solution time increases to 8 h, the content of Cu in the matrix increases from 1.15% to 1.41% and the dislocation density decreases. After an aging treatment at 180 degrees C for 12 h, the beta ', theta ', and Q ' phases precipitate. After heat treatment, the alloy strength value shows a "double peak" phenomenon. After a 1 h solution treatment, the tensile strength of the alloy reaches the first peak, which is mainly ascribed to the large dislocation density induced by the semisolid squeeze casting process. When the solution time is 8 h, the tensile strength of the alloy is 323 MPa and the tensile strength reaches the second peak, which is ascribed to the rounding of the Si phase and the strengthening effects of fine precipitates.
资助项目	National Natural Science Foundation of China[51674168] ; Key-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS研究方向	Materials Science
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000615790600001
资助机构	National Natural Science Foundation of China ; Key-Area Research and Development Program of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159189]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Runxia
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Hao, Jianfei,Yu, Baoyi,Bian, Jiancong,et al. Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment[J]. ADVANCED ENGINEERING MATERIALS,2021:8.
APA	Hao, Jianfei.,Yu, Baoyi.,Bian, Jiancong.,Liu, Jinmin.,Sun, Wanting.,...&Li, Runxia.(2021).Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment.ADVANCED ENGINEERING MATERIALS,8.
MLA	Hao, Jianfei,et al."Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment".ADVANCED ENGINEERING MATERIALS (2021):8.